상아질에 대한 단일 단계 접착제의 미세인장 결합강도

Abstract

This study compared the microtensile bond strength (μTBS) to dentin using three single step adhesives. Superficial dentin was exposed in fifteen human molars by sectioning the occlusal surface immediately under the enamel-dentin junction. After polishing the dentin surface with 600-grit SiC paper, they were assigned to three groups by used adhesives: Xeno group (Xeno Ⅲ), Prompt group (Adper Prompt L-Pop), AQ group (AQ Bond). Each adhesive was applied as per manufacturer's instruction, followed by composite of same manufacturer. The bonded specimens were sectioned into sticks with an interface area approximately 1㎟ and subjected to μTBS testing with a crosshead speed of 1mm/minute. The mean μTBS (n=20 for each group) was statistically compared using one-way ANOVA and Tukey's Test at the 0.05 probability level. The results of this study were as follows; 1. The μTBS to dentin was 48.78 ± 9.83 MPa for Xeno Ⅲ. 30.22 ± 4.52 MPa for Adper Prompt L-Pop, and 26.31 ±. 7.07 MPa for AQ Bond 2. The mean μTBS of Xeno group was significantly higher than that of Prompt group and AQ group (p ＜ 0.05). 3. There was not significantly different between the μTBS of Prompt group and AQ group.